ar71xx: add support for TP-Link Archer C25 v1

The TP-Link Archer C25 is a low-cost dual-band router.

Specification:

- CPU: Atheros QCA9561 775 MHz
- RAM: 64 MB
- Flash: 8 MB
- Wifi: 3x3 2.4 GHz (integrated), 1x1 5 GHz QCA9887
- NET: 5x 10/100 Mbps Ethernet

Some LEDs are controlled by an additional 74HC595 chip.

Signed-off-by: Ludwig Thomeczek <ledesrc@wxorx.net>
[minor code style fixes, boards alphabetical order fixes,
reworked commit message]
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

target/linux/ar71xx/base-files/etc/board.d/01_leds

@@ -54,6 +54,15 @@ sc1750|\
 sc450)
 	ucidef_set_led_wlan "wlan" "WLAN" "$board:green:wlan" "phy0tpt"
 	;;
+archer-c25-v1)
+	ucidef_set_led_netdev "wan" "WAN" "$board:green:wan" "eth0"
+	ucidef_set_led_wlan "wlan" "WLAN" "$board:green:wlan2g" "phy1tpt"
+	ucidef_set_led_wlan "wlan5g" "WLAN5G" "$board:green:wlan5g" "phy0tpt"
+	ucidef_set_led_switch "lan1" "LAN1" "$board:green:lan1" "switch0" "0x10"
+	ucidef_set_led_switch "lan2" "LAN2" "$board:green:lan2" "switch0" "0x08"
+	ucidef_set_led_switch "lan3" "LAN3" "$board:green:lan3" "switch0" "0x04"
+	ucidef_set_led_switch "lan4" "LAN4" "$board:green:lan4" "switch0" "0x02"
+	;;
 archer-c59-v1|\
 archer-c60-v1)
 	ucidef_set_led_switch "lan" "LAN" "$board:green:lan" "switch0" "0x1E"

target/linux/ar71xx/base-files/etc/board.d/02_network

@@ -133,6 +133,7 @@ ar71xx_setup_interfaces()
 	a60|\
 	alfa-ap96|\
 	alfa-nx|\
+	archer-c25-v1|\
 	dr344|\
 	gl-ar150|\
 	gl-ar300m|\

target/linux/ar71xx/base-files/etc/diag.sh

@@ -51,6 +51,7 @@ get_status_led() {
 	ap135-020)
 		status_led="ap135:green:status"
 		;;
+	archer-c25-v1|\
 	archer-c59-v1|\
 	archer-c60-v1|\
 	mr12|\

target/linux/ar71xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata

@@ -92,6 +92,7 @@ case "$FIRMWARE" in
 		ath10kcal_extract "art" 20480 2116
 		ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth0/address) -2)
 		;;
+	archer-c25-v1|\
 	archer-c59-v1|\
 	archer-c60-v1|\
 	tl-wdr6500-v2)